Fireproof ceiling-slab and floor-form.



3 SHEETS-SHEET I.

Patented Apr. 18, 1916.

U. 0. LONG.

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FIREPROOF CEILlNG SLAB AND FLOOR FORM. APPLICATION FILED MAY 13. 1915.

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%%,atfozneg$ U. 0. LONG.

FIREPROOF CEILING SLAB AND VFLOOR FORM.

APPLICATION FILED MAY 13, 1915. 1 179 851 Patented Apr. 18, 1916. 7 7 3SHEETS-SHEET 2.

U. 0. LONG.

FIREPROOF CEILING SLAB AND FLOOR FORM.

APPLICATION FILED MAY L3, 915.

Patented Apr. 18, 1916.

3 SHEETS-SHEET 3.

' FTEFIT FIREPROOF CEILING-SLAB AND FLOOR-FORM.

Specification of Letters Patent.

Patented Apr. 18, 319%.

Application filed May 13, 1915. Serial No. 27,906.

To all whom it may concern Be it known that I, URIAH 0. LONG, a citizenof the United States of America, residing'at. Los Angeles, in the countyof Los Angeles and State of California, have invented certain new anduseful Improvements in Fireproof Ceiling-Slabs and Floor Forms, of whichthe following is a speciiication, reference being had therein to theaccompanying drawing.

This invention relates to fireproof ceiling slabs and floor forms, andhas for its ob.- ject the production of a simple and eflicient means forproducing a fire-proof ceiling and floor form or constructing the sameby means of a form or mold.

plied thereto. Fig. 3 is a longitudinal sectional viewthrough a portionof the ceiling and fioor showing a suspended ceiling support inconnection with the tile and plastic concrete floor support. Fig. 4 is alongitudinal section through a portion of the ceiling and floor showinga modified form which may be employed having a thickened or dependinggirder. Fig. 5 is a detail per spective of the corrugated metallic formor brace used to form the arches of the ceiling. Fig. 6 is a detailperspective of the tile block used in connection with the presentinvention. Fig. 7 is a section taken on line 7-7, of Fig. 1. Fig. 8 is adetail perspective of an embodiment of the invention showing thecorrugated metallic form having a closed end. Fig. 9 is a detailperspective of the V-shaped end of the tile block used in connectionwith the present invention for deep construction. Fig. 10 is atransverse sectional view through 1" corrugated reinforcing structureillu the modified form shown in F Fig. 10 illustrates the method ofconnecting the folded portions upon the corner of the metallicreinforcing member.

By referring to the drawings it will be seen that 1 designates the bodyof the ceiling and floor which is provided with a plurality of arches orarchways 2 having a plurality of depending ribs 3 formed of plasticconcrete material formed therein. A plurality of longitudinallyextending braces 4 are placed within the depending ribs 3 as clearlyillustrated in Figs. 1, 2, 3 and i. The archways 2 are bracedoby meansof the corrugated sheet metal forms5 as clearly illustrated in Fig.1,the form being shown in detail in Figs. 5 and 8. This sheet metal formis placed within the archway for the purpose of assisting in forming theplastic concrete floor and also in bracing the concrete floor withoutthe necessity of employing metal laths and the like for reinforcing theplastitc concrete body.

By carefully considering Fig. 2 of the drawings it will be seen that theceiling and door are formed by placing the bottom mold blocks 7 upon thescaffold work 8 which mold blocks 7 constitute a mold. for the lowerends of the beams or ribs 3. The depending ends-9 of the sheet metalreinforcing mold 5 also fit upon the blocks 7 to constitute an efficientmold for the plastic concrete. This structure is illustrated clearly inFig. 2 of the drawings.

A central brace 10 may be employed for extending longitudinally of eacharchway 2 and may be formed of a substantially inverted V-shapedstructure constituting a plurality of planks which have their adjoiningedges connected by means of the wood screws 11. This brace 10 issupported upon a supporting plank 12 as illustrated clearly in Fig. 2 ofthe drawings. The supporting plank 12 is of course supported upon thescaffold which is adapted to be placed in the desired position forsupporting the mold formation 9. part of which comprises the blocks 7and the brace 10 as illustrated in Fig. 2 of the drawings.

its illustrated in Fig. 1 of the drawings it will be seen that the tileblocks 13 and 14 may be placed in their proper position across thearches 2 and have their beveled i5 and 16 fitting in the notches 17formed the beams 3. This structure is clearly illustrated in Fig. 1 ofthe drawings.

By carefully considering Figs. 1 and 6 of the drawings it will be seenthat the tile 13 is provided with an upwardly extending rib 18 whichcarries a wire 19 which has its upper end twisted together asillustrated by the numeral 20, the free ends 21 thereof being bent andfirmly cemented within the plastic concrete 1. The wire 19 passesthrough the upwardly extending rib 18 as clearly illustrated forthepurpose of constituting an efficient support for the tile at theinner end thereof. The tile 13 is provided with a substantially V-shapedgroove 22 along the side edge thereof for the purpose of receiving thetapering edge 23 of the tile 14 and constitutes an efiicientinterlocking means therefor. From the structure illustrated in Fig. 1 itwill be seenthat' v a very simple and efficient supporting means.

has been produced for supporting the tiles 13 and 14 within the arches 2of the ceiling.

Suitable ceiling decoration such vas the panels 24, 25 and 26 may beemployed'and secured to the lower ends'of the beams 3 and tiles 13 and14 such as illustrated in Fig. 1 of the drawings.

Attention is called to Fig. 6 of the drawings which shows the method ofmanufacturing the tile, wherein the two sections of the tiles 13 and 14may be formed in one piece, the portion or tile 14 being secured to thetile 13 at its lower edge 28 and at its upper edge at the pointindicated by the' numeral 29, and extending atan angle of approximately30 to the base of the tile 13. The tile 14 is secured to the upwardlyextending portion or flange 18 of the tile 13 and is scored along thepoint indicated by the numerals 28 and 29 for facilitating theseparation of the tiles 13 and14.

Attention is further called toFig. 5 of the drawings, which shows adetail perspective view of the sheet metal corrugated reinforcing platewhich is adapted. to fit in the arch. This plate is formed of sheetmetal as above stated, and is so arranged as to haveapproximately fivecorrugations or double crimps to an inch. Of course, this may be variedaccording to the desire of the manufacturer or builder.

As illustrated in- Fig. 10 the corrugated form 5 may be provided with aclosed end 30 also formed of corrugated material, and

the closed end 30 may be fixedly secured along the corner thereof to thedepending side portions 31 by means of lapping.

In Fig. 4 there is shown an embodiment of the present invention, or infact a further development of the device, wherein the plastic concrete33may be provided with the usual archways 34 having the corrugatedmetallic reini-acing plates 35 formed in the archways, the archwaysbeing closed at the lower ends by means of the tile blocks 36, whichtile blocks have their projecting end portions 37 fitting in the notches38 formed in the respective beams 39 of the ceiling. A depending girderor thickened rib ortion 40 is carried by the main girder spiral-likemanner as indicated by the f numeral 47 around the suspending wires forconstituting an eflicient support for the suspended ceiling 46.

.Attention is now called to Fig. 7, No. 52 I which is a notch at the topof the upright edge of tile to permit wire to be flush of tile.

Attention is now called to Fig. 8, No. 50 which is a small rivet throughlap to hold corner in placeon lap 51.

By carefully considering Fig. 7, it will be seen that the constructionof the wire loop 19 is shown disclosing the method in which the twistedends of the wire loop are embedded in the cement. It should beunderstood that the rib '18 of the tile 13 is not shown in Fig. 7 as itis thought unnecessary. It should be understood that Fig. 7 is a sectiontaken at right angles to Fig. 1 on line 77.

By referring particularly to Fig. 8, it will be seen that a modificationof the corrugated form 5 is shown, wherein a substantially box-shapedstructure having an open lower end is disclosed and the sides 30 of thecorrugated form 5 have their ends bent so as to overlap the side edgesof the end pieces or side portions 31, the folded ends 51 being securedto the side portions 31 by means of the rivet 5Q.

In Fig. 9 there is disclosed; a portion of the tile 13, showing themanner in which the tile is molded prior to the application of the tileto a ceiling. It should be understood that by molding the portion 14integral to the body of the tile, the same will be convenient forshipment and the rib 18 will not be likely to become broken as would bethe case if the portions 13 and 14 were shipped in separate pieces. Bythe structure shown in Fig. 9 and also in Fig. 6, it will be seen thatthe portion 14 may be separated from the remaining portion of the tile13 as above described. Fig. 9 merely illustrates the forward end of thetile showmg the manner in which the forward end oi the tile-that is tosay, the body portion 13'is connected to the separable portion, itthereof.

Having thus described the invention what is claimed as new, is

1. A device of the class described comprising a plastic concrete body,said plastic concrete body comprising a plurality of archways beingseparated by means of a plurality 0t depending rib portions, bracingjoists embedded within said rib portions, tiles spanning said archways,a corrugated reinforcing plate fitting upon the under face of saidarchways and. the inner faces of said ribs, panels secured to the underfacelof said tiles and the under -race of said ribs, said tilescomprising a primary and an auxiliary section, said primary sectionprovided with an upwardly extending flange portion, said primary sectionalso provided with a V-shaped groove along one side thereof, saidauxiliary tile provided with a V-shaped edge fitting in said V-shapedgroove of said primary portion whereby said tiles will be held in anassembled position, and-suspending wires secured to the upper edge ofsaid flange of said primary portion and embedded within said plasticconcrete body for eficiently supporting said tile within said arch.

2. A device of the classdescribed comprising a plastic concrete body,said plastic concrete body comprising a plurality of archways beingseparated by means of a plurality of depending rib portions, bracingjoists embedded within said rib portions, tilesspanning said archways, acorrugated reinforcing plate fitting upon the under face of saidarchways and the inner faces of said ribs, panels secured to the underface of said tiles and the under face of said ribs, said tilescomprising a primary and an auxiliaryisection, said primary sectionprovided with an upwardly extending side thereof, said auxiliary tileprovided with a V-shaped edge fitting in said V- shaped groove of saidprimary portion whereby said tiles will be held in an assembledposition, suspending wires secured to theupper edge of said flang'e'otsaid primary portion and embedded within said plastic concrete body forefficiently supporting said tile within said arch, said tiles providedwith projecting lips upon the sides thereof, said ribs provided withnotches along the side edges thereof for receiving said lips andassisting in holding said tiles in engagement with said body.

3. A device of the class described comprising a plastic body, said bodyprovided with a plurality of archways, separated by means of a pluralityof depending rib portions, tiles spanning said archways, said tilescomprising a primary and auxiliary section, said primary sectionprovided with an upwardly extending flange portion, means formed uponthe abutting edges of said tiles for permitting said tiles'to interlock,means engaging said vertically extending flange portion and anchoringthe same in engagement with said plastic body, and means formed uponsaid depending rib portions for engaging said tiles and constitutingsupports for the outer edges of said tiles in testimony whereof Ihereunto afi'ix my signature.

UREAH t). LONG.

Vfitnesses to signature:

A. C. Laenm, R. J. Knrno.

